Facebook officials told a blogger to keep their discussions with him private as they investigate claims he acquired names and e-mail addresses belonging almost one million account holders for $5 through a publicly available service online.

"Oh and by the way, you are not allowed to disclose any part of this conversation," member's of Facebook's platform policy team said during a tape-recorded telephone conversation, according to a blog post published by Bogomil Shopov, who describes himself as a "community and technology geek" who lives in Prague, Czech Republic. "It is a secret that we are even having this conversation."

Shopov said Facebook officials set up the conversation after an earlier blog post claiming he purchased data for one million Facebook users online for just $5. The blogger said it was impossible for him to determine exactly how recent the data was, although several of the entries he checked contained accurate e-mail addresses for people he knew. In addition to containing names and e-mail addresses, the cache he purchased also contained profile IDs. In an e-mail to Ars, Shopov said he suspects the data came from a third-party developer."